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Cross compilers for bare metal targets. This package contains the subpackages gcc-arm-none-eabi, gcc-mips-mti-elf, and gcc-msp430-elf. The bare metal ARM toolchain is tested and fully functional, the others are a proof of concept and not tested (due to lack of hardware).
166 lines
4.8 KiB
Text
166 lines
4.8 KiB
Text
# Maintainer: Marian Buschsieweke <marian.buschsieweke@ovgu.de>
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# Based upon Alpine's avr-gcc and Arch Linux's arm-none-eabi-gcc, to which
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# the following people contributed:
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# Contributor: Pedro Filipe <xpecex@outlook.com>
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# Contributor: Stefan Wagner <stw@bit-strickerei.de>
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# Contributor: Anatol Pomozov <anatol.pomozov@gmail.com>
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# Contributor: Martin Schmölzer <mschmoelzer@gmail.com>
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_pkgbase=gcc
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_targets="
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arm-none-eabi
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mips-mti-elf
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msp430-elf
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"
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pkgname="$_pkgbase-cross-embedded"
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pkgver=8.3.0
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pkgrel=0
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pkgdesc="The GNU Compiler Collection for embedded targets"
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url="http://gcc.gnu.org"
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depends="gcc"
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makedepends="bash linux-headers gmp-dev mpfr-dev mpc1-dev zlib-dev"
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arch="all"
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license="GPL-2.0 GPL-3.0-or-later LGPL-2.0"
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for target in $_targets; do
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targetnorm="${target//-/_}"
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subpackages="${_pkgbase}-${target}:${targetnorm} ${subpackages}"
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makedepends="$makedepends binutils-$target newlib-$target-stage1"
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done
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_islver=0.20
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source="https://mirrors.kernel.org/gnu/gcc/gcc-$pkgver/gcc-$pkgver.tar.xz
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http://isl.gforge.inria.fr/isl-${_islver}.tar.bz2"
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options="!check"
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builddir="$srcdir/$_pkgbase-$pkgver"
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prepare() {
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cd "$builddir"
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# link isl for in-tree build
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ln -s "$srcdir"/isl-"$_islver" isl
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# hack! - some configure tests for header files using "$CPP $CPPFLAGS"
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for dir in libiberty gcc; do
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sed -i "/ac_cpp=/s/\$CPPFLAGS/\$CPPFLAGS -O2/" $dir/configure
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done
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}
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_build_gcc() {
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"$builddir"/configure \
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--target=$target \
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--prefix=/usr \
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--with-sysroot=/usr/$target \
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--with-native-system-header-dir=/include \
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--with-headers=/usr/$target/include \
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--with-python-dir=share/gcc-$target \
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--libexecdir=/usr/lib \
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--infodir=/deleteme/info \
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--htmldir=/deleteme/html \
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--pdfdir=/deleteme/pdf \
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--mandir=/deleteme/man \
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--enable-languages=c,c++ \
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--enable-plugins \
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--enable-gnu-indirect-function \
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--disable-decimal-float \
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--disable-libffi \
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--disable-libgomp \
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--disable-libmudflap \
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--disable-libquadmath \
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--disable-libssp \
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--disable-libstdcxx-pch \
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--disable-nls \
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--disable-shared \
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--disable-threads \
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--disable-tls \
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--disable-werror \
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--with-gmp \
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--with-gnu-as \
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--with-gnu-ld \
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--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' \
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--with-isl \
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--with-libelf \
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--with-mpc \
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--with-mpfr \
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--with-multilib-list=rmprofile \
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--with-newlib \
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--with-system-zlib \
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--with-pkgversion='Alpine Linux'
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make INHIBIT_LIBC_CFLAGS='-DUSE_TM_CLONE_REGISTRY=0'
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}
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build() {
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for target in $_targets; do
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# Build "regular" variant
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workingdir="${srcdir}/build-${target}"
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mkdir "$workingdir"
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cd "$workingdir"
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export CFLAGS_FOR_TARGET='-pipe -Os -ffunction-sections -fdata-sections'
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export CXXFLAGS_FOR_TARGET='-pipe -Os -ffunction-sections -fdata-sections'
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_build_gcc
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# Rebuild without exceptions to generate nano variant of libstc++
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workingdir="${srcdir}/build-${target}-nano"
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mkdir "$workingdir"
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cd "$workingdir"
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export CFLAGS_FOR_TARGET='-pipe -Os -ffunction-sections -fdata-sections -fno-exceptions'
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export CXXFLAGS_FOR_TARGET='-pipe -Os -ffunction-sections -fdata-sections -fno-exceptions'
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_build_gcc
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done
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}
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package() {
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for target in $_targets; do
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depends="$depends $_pkgbase-$target"
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done
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mkdir -p "${pkgdir}"
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}
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_install_subpkg() {
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target="${subpkgname#${_pkgbase}-}"
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pkgdesc="The GNU Compiler Collection for $target targets"
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depends="$depends binutils-$target"
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workingdir="${srcdir}/build-${target}"
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cd "$workingdir"
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make install DESTDIR="$subpkgdir" -j1
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# install nano-variant into temporary folder to obtain libstdc++ from there
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workingdir="${srcdir}/build-${target}-nano"
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cd "$workingdir"
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make install DESTDIR="$subpkgdir-nano" -j1
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# Fetch libstdc++ from nano variant
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multilibs=$($subpkgdir/usr/bin/$target-gcc -print-multi-lib 2>/dev/null)
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for multilib in $multilibs; do
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dir="${multilib%%;*}"
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from_dir=$subpkgdir-nano/usr/$target/lib/$dir
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to_dir=$subpkgdir/usr/$target/lib/$dir
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cp -f $from_dir/libstdc++.a $to_dir/libstdc++_nano.a
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cp -f $from_dir/libsupc++.a $to_dir/libsupc++_nano.a
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done
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# Delete documentation. (The user can use the host GCC doc instead)
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rm -rf "$subpkgdir"/deleteme
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# Delete libcc1.so*, which is already part of the host's gcc
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rm -f "$subpkgdir"/usr/lib/libcc1.so*
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# Strip libs using target binutils
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find "$subpkgdir"/usr/lib -type f -name "*.a" -exec /usr/bin/$target-strip --strip-debug '{}' \;
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# Strip executables using host binutils
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find "$subpkgdir"/usr/bin -type f -executable -exec strip '{}' \;
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}
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arm_none_eabi() {
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_install_subpkg
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}
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mips_mti_elf() {
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_install_subpkg
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}
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msp430_elf() {
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_install_subpkg
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}
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sha512sums="1811337ae3add9680cec64968a2509d085b6dc5b6783fc1e8c295e3e47416196fd1a3ad8dfe7e10be2276b4f62c357659ce2902f239f60a8648548231b4b5802 gcc-8.3.0.tar.xz
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afe2e159b74646a26449268637403d271f9e3f6410d8cc1c9cffca41370c4357b165dea844db0c2a654591f954e54710dda650c8088abd4711406aa6302da950 isl-0.20.tar.bz2"
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